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From Fellrnr.com, Running tips
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==Fill with CO2 scrubber==
Just fill the box with CO2 scrubber and close the top; you're all done. Store the hypoxicator in a sealed plastic bag when not in use.
[[File:DIY Hypoxicator.JPG|none|thumb|500px]]
=Feedback=
If you make your own DIY Hypoxicator, please let me know how you get on.
